VULNERABILITY INTELLIGENCE

CVE-2020-21674

CVSS score6.5 MEDIUM
EPSS probability2.08%
CISA KEVNot currently listed
Published2020-10-15
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Description

Heap-based buffer overflow in archive_string_append_from_wcs() (archive_string.c) in libarchive-3.4.1dev allows remote attackers to cause a denial of service (out-of-bounds write in heap memory resulting into a crash) via a crafted archive file. NOTE: this only affects users who downloaded the development code from GitHub. Users of the product's official releases are unaffected.

Weakness classification

  • CWE-787: Out-of-bounds Write

Primary references